Pump



Bec. 25 i923.

WITNESS:

R. o. DULANEY PUMP Filed July 8. 1922 www2? 3 Sheets-Sheet l a A f j l f i lf Nw i g l\ i? l V15 INVENTOR ATTORNEY @een 25', i923. lAfAZ? R. o. DULANEY PUMP Filed July 8. 1922 5 sheets-sheet. 2

INVENTOR ATTORNEY WITNESS:

R. O. DULANEY Dec@ 25 E923.

PUMP

Filed July 8. 1922 3 Sheets-Sheet 5 INVENTOR ATTORNEY WITNESS:

Patented Dre-e125, `1923.. p

'arcmnn'o. nummer, or rom won'rn, Taxes.

mieter rare-nr erstes.

3 Be it known that I, RICHARD D UnANEY, a citizen of the U -ited States, residing-at Fort "Worth,:inV the countyof- Tarrant'andl State of Texas, have invented new anduseful Improvements" in Pumps,` offwhioh the following is'a specification.-`

This invention relates to pumps for oil-wells andtheA like, the general object of the invention being to' so form thel parts that mudand sand are prevented vfrom reaching the cups and stutingboxand injuring the sameand alsol to prevent the mud or sand from interfering with the operation 'of the valves.

Another object of the invention is to provide means whereby the wellcan How without passing through the valves of the pump and interferin with the pump action.

A further o ject of the invention is to provide means whereby the pressure in the pump can act on the stuiiing material to hold the same against the barrel.

The invention also consists in certain other features of construction and in the combination and arrangement of the several parts, to be hereinafter fully described, illustrated in the accompanying drawings and specifically pointed out in the appended claims.

In describing' my invention in detail, reference will be had to the accompanying drawings wherein like characters denote like or corresponding parts throughout the several views, and in which Figures 1 and 1'1 are sectional views of a pump constructed in accordance with this invention.

Figure 2 is a section on line 2-2 of Figure 1.

Figure 3 ure 1a.

Figure 4 is a section on line 4-4 of Figure 1a.

Figure 5 is a section on line 5-5 of Figure la.

Figure 6 is a sectional view showing a modification.

Figure 7 is a section on line 7-7 of Figure 6.

Figure 8 is a section on line 8-8 of Figure 6.

lin these views, 1 indicates the pump casing, the lower part of which is enlarged as is asection on line 23T-3 of Figshown at #1. The piston 2 lits over they upper end of the working barrel 3 and has 1922.' seria; no. 's'zsaa a packing box`4V at its lower end which is providedY with the holesV 5 so that the pressure within the pum `can act on the packlngrnaterial in' the Ibox to ,press the-same against the polish barrel. The piston rod 1s shown at 6. The barrel is. rov'ided with a curved extension 7 which 1sthreaded to av gasanchor 8, which passes throuh the partlt-ion A` valve tube 10 exten s into the lower straight part of ythe extensionl 7, the upper-'endv of the tube forming" a seat for aball lvalve r10. A pipe 11 has its lower end threaded to a short :pipe 12 which is threaded in a hole in the partition. A valve tube 13 is carried by the pipe 12 and extends into the pipe 11, the upper end of this tube forming a seat for a ballv valve 14. A nipple 15 connects the lower end of the extenslon 7 with a valve tube 16 which is located in the upper part of the pipe 11, the nipple passing through a hole in said pipe 11. The lower end of the tube 16 is closed by a screw plug 17 and its upper end forms a seat for a valve 18. The casing is provided with an inlet 19 below the partition, this inlet being above the bottom of the anchor.

From the above it will be seen that the suction created by the moving pistion in the barrel will cause the oil in the casing to ass up the anchor, into the valve tube and y the valve thereon into the extension. As the barrel and piston form gas pockets the oil cannot enter these parts and thus the cups and packing are prevented from being inJured by mud and sand which might be brought to them by the oil. The oil in the extension is forced' around the valve tube, through the nipple 15 into the tube 16 and by the valve thereon into the casing. A flow of oil and gas into the casing is taken care of without interfering with the action of the pump, as this iiow will pass into the pipe 11 by way of the tube 13 and after passlng around the tube 16 will pass into the casing. As the oil passes from tube 16 it has the effect of a jet in drawing as or oil through tube 13. As the fluid is orced back around valve 10 it acts to clean the valve. The gas anchor will prevent the gas from interfering with the pump and has a tendency to force the gas through the valve 14.-. rlhe arrangement of parts permits the barrel to be .pulled with the rods so that the stuffing box can be repacked.

ln Figure 6, the piston 2 passes into the barrel 3 and the stu'ng box 4 is carried.

i. by the to 1 of thebarrel and surrounds the lston. his box is rovided with the perorations, as before escribed, to permit the packing therein to be acted upon by ythe pressure 'of the" pump. This form of the invention has a much larger capacity than the first form.

. It is thought from the loregoin descripf tion that the advanta es and nove features d 104 I claim 1s 1. A. pump' of the class described comprising a casing, a barrel therein, a piston associated with the barrel for forming a suction therein, a' gas anchor connected with the barrel, a ball valve controlling communication betweenthe anchor and the barrel, said barrel having an outlet therein araereas? ranged below the valve seat and means for formlng a lgas pocket in the upper part of vthe barrel for vpreventing the oil enterin 'this part and for forcing the oil throug the outlet and around the top of the valve to clean the same. v A pump of the class described comrlsing a casing, having an inlet at its ower part, a partition above the inlet, a gas anchor passing through the partition and v extending below 'the inlet, f'a barrel connected with the anchor, a ball valve controlllng the passage between the anchor and barrel, a pipe lcarried by' the partition and n communication with the space below the partltion, a raised valve seat in the pipe, a valve on said seat, a tube inl the upper Bart of the plpe andl connected with the arrel below the valve seat of the valve therein, a valve at the top of the tube and a plug closing the lower end of. the tube.

In testimony whereof I aiiix my signature.

RICHARD o. DULANEv. 

